3

www.fairchildsemi.com

Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The datasheet specifications should be met, without exception, to ensure

that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside datasheet specifica-

tions.

Electrical Characteristics (LM7805)

(Refer to the test circuits.

low duty is used.

Note 3: These parameters, although guaranteed, are not 100% tested in production.

Parameter

Symbol

Value

Unit

35

V

40

V

Thermal Resistance Junction-Cases (TO-220)

5

qC/W

Thermal Resistance Junction-Air (TO-220)

65

qC/W

Operating Temperature Range

0

a 125

qC

LM78xx

40 a 125

qC

LM78xxA

0

a 125

qC

Storage Temperature Range

65 a 150

qC

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Output Voltage

5.0

5.2

V

5mA

4.75

5.0

5.25

Line Regulation

Regline

–

4.0

100

mV

(Note 2)

–

1.6

50.0

Load Regulation

Regload

–

9.0

100

mV

–

4.0

50.0

Quiescent Current

5.0

8.0

mA

Quiescent Current Change

–

0.03

0.5

mA

–

0.3

1.3

Output Voltage Drift (Note 3)

–

0.8

–

mV/

qC

Output Noise Voltage

–

42.0

–

Ripple Rejection (Note 3)

RR

62.0

73.0

–

dB

Dropout Voltage

2.0

–

V

Output Resistance (Note 3)

rO

f = 1KHz

–

15.0

–

m

:

Short Circuit Current

230

–

mA

Peak Current (Note 3)

2.2

–

A